Fullstack Tech Lead - AI

Important Information
Location: Brazil
Job Mode: Full-time
Work Mode: Work from home

Job Summary
As a Fullstack Tech Lead focused on Artificial Intelligence, you will lead the development of innovative AI-powered systems by collaborating closely with backend and frontend engineers. This role requires hands-on coding expertise, architectural vision, and a deep understanding of modern AI frameworks. You will be responsible for designing scalable fullstack solutions using cutting-edge technologies, driving technical excellence, and shaping the engineering standards for intelligent automation.

Responsibilities and Duties

• Lead the design and development of fullstack systems using Node.js, NestJS, and Langchain, ensuring robust architecture and maintainable code;
  
• Architect backend services and APIs that integrate with LLMs and support agent workflows, using TypeScript and JSON-based configurations;
  
• Collaborate with frontend engineers to ensure seamless integration, while maintaining backend ownership;
  
• Experiment with emerging GenAI technologies, including RAG, embeddings, and vector databases, to enhance solution capabilities;
  
• Guide engineering best practices through code reviews, documentation, and mentoring;
  
• Work closely with product and design teams to translate business requirements into intelligent automation features.
  

Essential Skills

• Advanced proficiency in Node.js, NestJS, and TypeScript, with experience in building scalable backend systems;
  
• Hands-on experience with Langchain, including prompt engineering, agent orchestration, and tool integration;
  
• Strong foundation in software engineering principles, including system design, API architecture, and testing;
  
• Experience working with JSON configurations and managing structured data flows.
  

Highly Desirable Skills

• Experience designing GenAI architectures using Langchain agents, RAG, and LLM APIs (e.g., OpenAI, Anthropic);
  
• Familiarity with vector databases and embedding models;
  
• Exposure to cloud platforms (AWS, GCP, Azure) and CI/CD pipelines;
  
• Experience with remote collaboration tools and asynchronous workflows.
  

Optional Skills

• Knowledge of Docker and containerized deployments;
  
• Experience with CI/CD tools;
  
• Ability to write and maintain technical documentation;
  
• Familiarity with test automation frameworks (e.g., Jest, Mocha);
  
• Understanding of multi-agent orchestration and tool calling;
  
• Experience working in agile environments with cross-functional teams.

About Encora
Encora is the preferred digital engineering and modernization partner of some of the world’s leading enterprises and digital native companies. With over 9,000 experts in 47+ offices and innovation labs worldwide, Encora’s technology practices include Product Engineering & Development, Cloud Services, Quality Engineering, DevSecOps, Data & Analytics, Digital Experience, Cybersecurity, and AI & LLM Engineering.
At Encora, we hire professionals based solely on their skills and qualifications, and do not discriminate based on age, disability, religion, gender, sexual orientation, socioeconomic status, or nationality.